搞怪

搞怪	gǎo guài	to do sth wacky / wacky / wacky behavior
搞	gǎo	to do / to make / to go in for / to set up / to get hold of / to take care of
怪	guài	odd; strange; uncanny / (bound form) monster; supernatural being / to find strange; to regard as odd / to blame / (coll.) somewhat; rather
怪	guài	variant of 怪